<?xml version="1.0" encoding="UTF-8"?>  
<!--  
  Licensed to the Apache Software Foundation (ASF) under one or more  
  contributor license agreements.  See the NOTICE file distributed with  
  this work for additional information regarding copyright ownership.  
  The ASF licenses this file to You under the Apache License, Version 2.0  
  (the "License"); you may not use this file except in compliance with  
  the License.  You may obtain a copy of the License at  
  
      http://www.apache.org/licenses/LICENSE-2.0  
  
  Unless required by applicable law or agreed to in writing, software  
  distributed under the License is distributed on an "AS IS" BASIS,  
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  
  See the License for the specific language governing permissions and  
  limitations under the License.  
-->  
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">  
<head>  
    <title>Apache Tomcat WebSocket Examples: Chat</title>  
    <style type="text/css"><![CDATA[  
        input#chat {  
            width: 410px  
        }  
  
        #console-container {  
            width: 400px;  
        }  
  
        #console {  
            border: 1px solid #CCCCCC;  
            border-right-color: #999999;  
            border-bottom-color: #999999;  
            height: 170px;  
            overflow-y: scroll;  
            padding: 5px;  
            width: 100%;  
        }  
  
        #console p {  
            padding: 0;  
            margin: 0;  
        }  
    ]]></style>  
    <script type="application/javascript"><![CDATA[  
        "use strict";  
  
        var Chat = {};  
  
        Chat.socket = null;  
  
        Chat.connect = (function(host) {  
            if ('WebSocket' in window) {  
                Chat.socket = new WebSocket(host);  
            } else if ('MozWebSocket' in window) {  
                Chat.socket = new MozWebSocket(host);  
            } else {  
                Console.log('Error: WebSocket is not supported by this browser.');  
                return;  
            }  
  
            Chat.socket.onopen = function () {  
                Console.log('Info: WebSocket connection opened.');  
                document.getElementById('chat').onkeydown = function(event) {  
                    if (event.keyCode == 13) {  
                        Chat.sendMessage();  
                    }  
                };  
            };  
  
            Chat.socket.onclose = function () {  
                document.getElementById('chat').onkeydown = null;  
                Console.log('Info: WebSocket closed.');  
            };  
  
            Chat.socket.onmessage = function (message) {  
                Console.log(message.data);  
            };  
        });  
  
        Chat.initialize = function() {  
            if (window.location.protocol == 'http:') {  
                Chat.connect('ws://' + window.location.host + '/websocket/chat');  
            } else {  
                Chat.connect('wss://' + window.location.host + '/websocket/chat');  
            }  
        };  
  
        Chat.sendMessage = (function() {  
            var message = document.getElementById('chat').value;  
            if (message != '') {  
                Chat.socket.send(message);  
                document.getElementById('chat').value = '';  
            }  
        });  
  
        var Console = {};  
  
        Console.log = (function(message) {  
            var console = document.getElementById('console');  
            var p = document.createElement('p');  
            p.style.wordWrap = 'break-word';  
            p.innerHTML = message;  
            console.appendChild(p);  
            while (console.childNodes.length > 25) {  
                console.removeChild(console.firstChild);  
            }  
            console.scrollTop = console.scrollHeight;  
        });  
  
        Chat.initialize();  
  
        document.addEventListener("DOMContentLoaded", function() {  
            // Remove elements with "noscript" class - <noscript> is not allowed in XHTML  
            var noscripts = document.getElementsByClassName("noscript");  
            for (var i = 0; i < noscripts.length; i++) {  
                noscripts[i].parentNode.removeChild(noscripts[i]);  
            }  
        }, false);  
  
    ]]></script>  
</head>  
<body>  
<div class="noscript"><h2 style="color: #ff0000">Seems your browser doesn't support Javascript! Websockets rely on Javascript being enabled. Please enable  
    Javascript and reload this page!</h2></div>  
<div>  
    <p>  
        <input type="text" placeholder="type and press enter to chat" id="chat" />  
    </p>  
    <div id="console-container">  
        <div id="console"/>  
    </div>  
</div>  
</body>  
</html>  
